Emergency Off Connection, Single-Channel; Figure 26: Connection 4 × Emergency Off, Single-Channel, Short Circuit Test; Figure 27: Connection 4 × Emergency Off, Single-Channel, Short Circuit Test - WAGO 750 Manual

78 Commissioning
Ensure protected installation when the short circuit test is activated!
With the two clock outputs T1 and T2, you can install the signal lines of at most
two contiguous input channels in one common cable. Otherwise, the F I/O
module cannot detect short circuits between signal lines of the inputs that are
tested with the same clock output. Make sure that the signal lines that belong to
the same clock output T1 or T2 are installed with protection against each other
according to IEC 60204-1 or ISO 13849-2 (e.g., as separate sheathed lines or in
separate cable ducts).
You can take alternative measures (e.g., antivalent evaluation) for fault detection
to achieve the required risk reduction for your application (e.g., SIL3/Cat.4/PL e).
The safety parameters of the F I/O module do not change.
7.5.1.1

Emergency Off Connection, Single-channel

Figure 26: Connection 4 × Emergency Off, Single-Channel, Short Circuit Test Activated
Figure 27: Connection 4 × Emergency Off, Single-Channel, Short Circuit Test Deactivated
Manual
Version 1.0.0, valid from HW/SW Version 01/01
WAGO I/O System 750
753-661/000-004 4FDI 24V PROFIsafe